I added two background colors to my component/module areas for a specific effect (see image) and I am running into a problem with IE9 background bleed at the corners (see other image). For the mainbody content I added two wrapper divs around

I have two modules set to the position sidebar2 which doesn't give me the top level wrapper to apply the IE9 fix you see in the code above. For the modules I utilized the divs already generated (with the classes of 't3-module' & 'module-inner'). I applied the LESS/CSS below:

The problem is with the modules I need to add a wrapper div around the 't3-module' div. If I was to apply the IE9 fix to the 't3-sidebar' it would only work on the top corners of the top module and the bottom corners of the bottom module as it wraps both together. When I look at the sidebar2 code in mainbody.php I have the following:

I figured out how to do it but I'd like some confirmation this is the best way to go about things. I read up and leaned a little about Module Chromes in Joomla (see additional URL's below) and saw in 'mainbody.php' the jdoc is calling "T3Xhtml" which can be found in the 'modules.php' file in \plugins\system\t3\base\html\ folder. In that folder you can find the Module Chrome "T3Xhtml" after the commenting: